Open AccessThe light intensity-dependent superprism phenomenon in nonlinear photonic crystals
Author(s) -
Xiaojun Chen,
Lijun Wu,
Hu Wei,
Sheng Lan
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.1025
Subject(s) - photonic crystal , finite difference time domain method , optics , intensity (physics) , negative refraction , beam (structure) , refractive index , nonlinear system , light beam , transmission (telecommunications) , kerr effect , power (physics) , light intensity , self focusing , nonlinear optics , physics , materials science , optoelectronics , laser beams , telecommunications , quantum mechanics , computer science , laser
We investigate the light intensity-dependent superprism phenomenon in the two-dimensional Kerr nonlinear photonic crystal (PhC) by nonlinear finite-difference time-domain (FDTD) technique. Results show that when the intensity of the self-pumping beam is increased from 70 to 300 W/μm, the refraction angle of the beam can be tuned about 10 degree. Furthermore, when the input power is high enough, the wave vector can be rotated by the local refractive index interfaces induced by the pumping power. By monitoring the transmission efficiency at different depths in PhCs, the propagating beam is found to undergo several states which correspond to different power loss mechanisms.